摘要
以卫星搭载大麦品种花30种子的180份SP2代和14份SP3代作为供试材料,设置0和5.0g/LNaCl溶液25℃、12h浸种后,分别置于含NaCl 0和15g/L的溶液中发芽,比较种子萌发阶段的耐盐性。结果表明:供试材料在主根长度、发根数、芽鞘长度和发芽率影响率上均存在广泛变异;大部分材料的直接表达型耐盐性比花30的高,而诱导表达型耐盐性比花30的低;直接表达型耐盐性可以遗传,而诱导表达型耐盐性不能传递给后代。
Using 180 SP2 and 14 SP3 seeds,which derived from barley cultivar Hua 30 induced by space environment in satellite,were used as experiment materials.The seeds were pretreated for 12h with 0 and 5g/L NaCl and then germinated under 0 and 15g/L NaCl stress,salt tolerance of germination were compared,the results showed variations of radicle length,root number,coleoptiles length and germination rate among the materials.The direct salt tolerance was improved,and the induced salt tolerance was decreased for most of SP2 materials compared to that of the control＂Hua 30＂.The direct salt tolerance could be inherited,however the induced salt tolerance after NaCl pretreatment could not be inherited.
出处
《核农学报》
CAS
CSCD
北大核心
2010年第5期901-909,共9页
Journal of Nuclear Agricultural Sciences
基金
“十一五”国家科技支撑计划重点项目(2008BAD97B07)
大麦现代产业技术体系(NYCYTX-029)
公益性行业(农业)科研专项(nyhyzx07-001-大麦)
上海市科技兴农重点攻关项目(沪农科攻字(2009)第2-1号)
关键词
大麦
航天诱变
种子萌发
耐盐性
barley
space mutation
seed germination
salt tolerance
